1.What is the problem?
Tricircle doesn't support python3 yet, but python2 support will
be stopped in 2020. OpenStack community has put the support of
python3 as the community wide goal in Pike release, Tricircle
needs to be ready for this.
2.What is the solution to the problem?
Port the code to be compatible with both python2 and python3, for
python3, only the python3.5 version will be supported.
After this patch is merged, a new gate/check job for python3.5
should be enabled too.
3.What the features need to be implemented to the Tricircle
to realize the solution?
No new features.
Signed-off-by: joehuang <email@example.com>